Bathtub



FIG. 1 is a front/left-side/top perspective view of a bathtub showing our new design;

FIG. 2 is a front-side elevational view thereof;

FIG. 3 is a rear-side elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top-side elevational view thereof;

FIG. 7 is a bottom-side elevational view thereof; and,

FIG. 8 is a sectional view of FIG. 6. 

We claim the ornamental design for bathtub, as shown. 